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powerpc/altivec: Add missing prototypes for altivec

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Some functions prototypes were missing for the non-altivec code. Add the
missing prototypes in a new header file, fix warnings treated as errors
with W=1:

  arch/powerpc/lib/xor_vmx_glue.c:18:6: error: no previous prototype for ‘xor_altivec_2’ [-Werror=missing-prototypes]
  arch/powerpc/lib/xor_vmx_glue.c:29:6: error: no previous prototype for ‘xor_altivec_3’ [-Werror=missing-prototypes]
  arch/powerpc/lib/xor_vmx_glue.c:40:6: error: no previous prototype for ‘xor_altivec_4’ [-Werror=missing-prototypes]
  arch/powerpc/lib/xor_vmx_glue.c:52:6: error: no previous prototype for ‘xor_altivec_5’ [-Werror=missing-prototypes]

The prototypes were already present in <asm/xor.h> but this header file is
meant to be included after <include/linux/raid/xor.h>. Trying to re-use
<asm/xor.h> directly would lead to warnings such as:

  arch/powerpc/include/asm/xor.h:39:15: error: variable ‘xor_block_altivec’ has initializer but incomplete type

Trying to re-use <asm/xor.h> after <include/linux/raid/xor.h> in
xor_vmx_glue.c would in turn trigger the following warnings:

  include/asm-generic/xor.h:688:34: error: ‘xor_block_32regs’ defined but not used [-Werror=unused-variable]

Signed-off-by: Mathieu Malaterre <malat@debian.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Mathieu Malaterre 2018-03-28 20:55:25 +02:00 committed by Michael Ellerman
parent eae5f709a4
commit 7cf76a68f1
3 changed files with 21 additions and 11 deletions
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12
arch/powerpc/include/asm/xor.h
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@ -24,17 +24,7 @@
#include <asm/cputable.h>
#include <asm/cpu_has_feature.h>
void xor_altivec_2(unsigned long bytes, unsigned long *v1_in,
unsigned long *v2_in);
void xor_altivec_3(unsigned long bytes, unsigned long *v1_in,
unsigned long *v2_in, unsigned long *v3_in);
void xor_altivec_4(unsigned long bytes, unsigned long *v1_in,
unsigned long *v2_in, unsigned long *v3_in,
unsigned long *v4_in);
void xor_altivec_5(unsigned long bytes, unsigned long *v1_in,
unsigned long *v2_in, unsigned long *v3_in,
unsigned long *v4_in, unsigned long *v5_in);
#include <asm/xor_altivec.h>
static struct xor_block_template xor_block_altivec = {
.name = "altivec",

19
arch/powerpc/include/asm/xor_altivec.h Normal file
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@ -0,0 +1,19 @@
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_POWERPC_XOR_ALTIVEC_H
#define _ASM_POWERPC_XOR_ALTIVEC_H
#ifdef CONFIG_ALTIVEC
void xor_altivec_2(unsigned long bytes, unsigned long *v1_in,
unsigned long *v2_in);
void xor_altivec_3(unsigned long bytes, unsigned long *v1_in,
unsigned long *v2_in, unsigned long *v3_in);
void xor_altivec_4(unsigned long bytes, unsigned long *v1_in,
unsigned long *v2_in, unsigned long *v3_in,
unsigned long *v4_in);
void xor_altivec_5(unsigned long bytes, unsigned long *v1_in,
unsigned long *v2_in, unsigned long *v3_in,
unsigned long *v4_in, unsigned long *v5_in);
#endif
#endif /* _ASM_POWERPC_XOR_ALTIVEC_H */

1
arch/powerpc/lib/xor_vmx_glue.c
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@ -13,6 +13,7 @@
#include <linux/export.h>
#include <linux/sched.h>
#include <asm/switch_to.h>
#include <asm/xor_altivec.h>
#include "xor_vmx.h"
void xor_altivec_2(unsigned long bytes, unsigned long *v1_in,